The outward-facing cell walls of epidermal cells contain which substance to reduce water loss?
a. wax
b. pectin
c. lignin
d. suberin
e. chitin
a
Biology & Microbiology
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Which of the following can be completely degraded to carbon dioxide by microorganisms?
A) petroleum B) uranium C) chlorinated organics D) petroleum and chlorinated organics
Biology & Microbiology
Which pigment(s) is/are characteristic of chlorophytes?
a. chlorophyll a b. phycobilins c. chlorophyll b d. fucoxanthin e. chlorophylls a and b
Biology & Microbiology
Using actual landmarks within DNA sequences, scientists can generate a ________ map.
A. DNA B. physical C. genetic D. chromosomal
Biology & Microbiology
DNA and RNA are alike in that they _____________.
A. both have same pentose sugar B. use the same nitrogenous bases to assemble the genetic code C. have the same number of strands D. both contain nucleotides E. are both made in the cytoplasm
Biology & Microbiology